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Finding the Fourth Proportional to 551.99, 828.31 and 243.82

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Solution

The fourth proportional to 551.99, 828.31 and 243.82 is: 365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.99 : 828.31 = 243.82 : x
  2. Step 2: Convert to fraction form
    551.99/828.31 = 243.82/x
  3. Step 3: Cross multiply
    551.99x = 828.31 × 243.82
  4. Step 4: Simplify right side
    551.99x = 201,955.86
  5. Step 5: Solve for x
    x = 201,955.86/551.99
  6. Step 6: Final answer
    x = 365.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.